binding expression error

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1

Hi All,

I want to do an interesting thing and up to now did not find any solution to solve it.

I want to set the focus property of an element.
Given a simple image object with a clientside click event setfocusitem(‘elementid’);

There is a script block on page to handle this click event.
Here is my javascript code:


function setfocusitem(item){
	setTimeout(function() {   
		var elem = CAF.model("#{activePageBean.clientIds['"+item+"']}");  
		elem.setFocused(true);
	}, 1000);
}

It gets binding expression error.
My question is that, how to concatenate the correct expression string in javascript.
I want to use this javascript function from page, from more controls with different parameter, so it means the parameter ‘elementid’ is always different.

Many thanks for your help.

Zsolt

2

Resolving expressions is a server-side operation. So you can’t do the same logic from the client-side javascript.

So you would either have to always pass the fully qualified controlId to the setfocusitem function and then to the logic like below:

function setfocusitem(item) {
	setTimeout(function() {   
		var elem = CAF.model(item);  
		elem.setFocused(true);
	}, 1000);
}

Or concat the relative part of the id to an ancestor that was resolved on the server-side with something like this:

function setfocusitem(item){
	setTimeout(function() {   
		var elem = CAF.model("#{caf:cid('defaultForm')}" + ":" + item);  
		elem.setFocused(true);
	}, 1000);
}
1 Like
3

Hi Eric,

Thanks for your answer.
I use the fully qualified controlId, and your first suggestion is working well.

Many thanks and have a nice day.

Zsolt